Convert LastPass Authenticator JSON export to Aegis. This does not access your LastPass account or interact with any external resources for security. Please remember to delete your export files after you have imported them to Aegis as they could be used to retrieve your tokens.

lp_aegis_convert.md

This script is now in a repository: https://github.com/tghw/lastpass_aegis_convert

To run this, download the script and run:
python lp_aegis_convert.py path/to/lastpass_auth_export.json

It will convert the LastPass Authenticator entries to the Aegis JSON format. Then, go to Import/Export -> Import in Aegis and use the Aegis file type.

You will need to transfer the files off and back onto your phone to make this work, something like Dropbox will make that easy.

Thanks for this. Worked great. Really appreciate the effort that went into this!

If I may add a suggestion: your script uses issuerName from the original file as name for the new file. For me, this results in name and issuer being the same for most accounts in Aegis. So now, if I have multiple accounts for the same issuer, I just see a bunch of entries labelled e.g. "Google (Google)" in Aegis.

The userName from LastPass is added as notes, but this field is not displayed in the overview in Aegis and not searchable.

I solved it like this:

"name": account.get("userName", ""),
"issuer": account.get("originalIssuerName") if len(account.get("originalIssuerName", "")) > 0 else account.get("issuerName", ""),
"note": None,

Huge thanks to the author and to Herjan's additional improvement.
I just ran this on my Lastpass .json export to move to Aegis and it worked perfectly first time.
I hope Aegis will include Lastpass import natively soon as it looks very straightforward.

I got an error due to Aegis not accepting spaces in secret strings; instead, it would just throw an error and become unusable until data storage is cleared (or the app is reinstalled). But as the spaces are just for readability anyway, they can safely be removed. Implementing both changes, by me and @Herjan, gives us the following script:

import json
import argparse
from pathlib import Path

def main(path):
    lp_json = Path(path)
    with open(lp_json) as fd:
        lp_data = json.load(fd)
    ae_entries = []
    ae_data = {
        "version": 1,
        "header": { "slots": None, "params": None },
        "db": { "version": 2, "entries": ae_entries },
    }
    for account in lp_data.get("accounts", []):
        entry = {
            "type": "totp",
            "uuid": account.get("accountID"),
            "name": account.get("userName", ""),
            "issuer": account.get("originalIssuerName") if len(account.get("originalIssuerName", "")) > 0 else account.get("issuerName", ""),
            "note": None,
            "favorite": account.get("isFavorite", False),
            "icon": None,
            "info": {
                "secret": account.get("secret").replace(" ", "") if "secret" in account else None,
                "algo": account.get("algorithm"),
                "digits": account.get("digits"),
                "period": account.get("timeStep"),
            },
        }
        ae_entries.append(entry)
    ae_json = lp_json.parent / f"aegis_{lp_json.name}"
    with open(ae_json, "w") as fd:
        json.dump(ae_data, fd)
    print(f"Converted. Export file: {ae_json}")


if __name__ == "__main__":
    parser = argparse.ArgumentParser("LastPass Authenticator to Aegis JSON Converter")
    parser.add_argument("filename", help="LastPass Authenticator JSON File")
    args = parser.parse_args()
    main(args.filename)

Thanks! I've converted this to a repo, which can be found at: https://github.com/tghw/lastpass_aegis_convert

Thank you. Your code inspired me to write an analogue in typescript for node.js. :)
https://github.com/denisemenov/lastpass-auth-export

Thank you. Your code inspired me to write an analogue in typescript for node.js. :) https://github.com/denisemenov/lastpass-auth-export

🙌